Cometic, uszczelka podstawy cylindra. .015″ miedź 3-5/8″ otwór

”Type A” gasket. 3-5/8″ big bore copper gasket. Type A gasket explained: The ”Type A” gasket is the early type introduced on the 1984 Evolution Big Twin models; and can be used on all of the 84-99 Evo Big Twin models and will follow the contoures of the cylinder base perfectly. They will fit 86-22 Evo XL; but stick out at the cylinder base. Both type ”A” and type ”B” have identical inner bore diameter; oil hole and stud hole locations. Gaskets for front & rear cylinder are identical. Only difference between the ”A” & ”B” gaskets is the outside perimeter.